EP0970921A2 - Method for making a fixed-bed body - Google Patents

Abstract

Fixed bed contactor units for biological treatment of liquids e.g. effluent treatment. A fixed bed unit (10) for biological treatment of liquids, preferably arranged within a containment frame (11), is assembled from a number of quadrilateral packed blocks (18), which are assembled outside of the containment frame (11) and installed into the frame as a single unit. Preferably the blocks (18) are of essentially identical dimensions. The blocks may be formed of irrigation tube sections (20) which may be either vertical or horizontal when the blocks are positioned in the frame. The blocks may be mechanically handled by a lifter having several lifting -fork type posts which are engaged into the tube section bores.

Description

The invention relates to a method for producing a Fixed bed body according to the preamble of claim 1. Fixed bed body of the species mentioned are predominantly biological Treatment of fluids, for example for biological Wastewater treatment, used. The individual fixed bed bodies are formed from a large number of interconnected Packing blocks. These packing blocks are in turn usually cuboid, in particular cube-shaped and are made up of a large number of grids composite pipes. The tubes are preferably around plastic pipes with a mesh-like structure Lateral surface, preferably mesh tubes.

One or more fixed bed bodies are preferably on a support in a basin, a container or the like arranged to accommodate the liquids to be treated.

In the manufacture of a fixed bed body, the procedure used so far is that the individual packing blocks on the support be assembled in the container by essentially by appropriate stacking of the packing blocks a fixed bed body is formed. The packing blocks stacked together in this way must then still be connected to each other and to the support so that they are in the liquid-filled container don't swim up. The manufacture or assembly of the fixed bed body in the container is complicated by the fact that the activities must be done from the grid-like support, and at least with a largely finished fixed bed body in the container there is a narrowness that makes working difficult. Another decisive disadvantage of the previous assembly or production of fixed bed bodies is that of one above the other stacked and unconnected packing blocks one there is an increased risk of accidents if upper packing blocks fall off the stack.

The invention is based on the problem of a method for Creating a fixed bed body that is easy to especially under favorable working conditions and proportionately can be carried out safely for the fitters involved.

A procedure for solving this problem shows the measures of Claim 1 on. The fact that several packing blocks outside of the container or a pool and as an element (fixed bed element), from several fixed bed bodies in the container can be used, the assembly activities for the fixed bed body mostly outside the container or pelvis. In the basin or container only need the fixed bed elements from a plurality already are in the final relative arrangement to each other and interconnected packing blocks to become. A putting together, especially a Stacking, individual packing blocks within the container or pelvis is no longer required.

According to a development of the method, each fixed bed element or optionally also several fixed bed elements assembled packing blocks by means of a transport aid inserted in the container or basin. This Transport aids can have several functions: one is used to assemble the fixed bed element from several Packing blocks reliable and easy with one Connect the crane to insert the fixed bed element into the container. On the other hand, the means of transport holds the fixed bed element composite packing blocks and in the intended Position together, and preferably positively. This is particularly important during transport in the Container detaching individual packing blocks from the fixed bed element effectively avoided.

According to a further advantageous embodiment of the method the packing blocks on a flat, preferably horizontal base assembled outside the container. The flat, especially horizontal surface makes assembly easier the packing blocks to the fixed bed element considerably. You only need the packing blocks to be assembled placed on the pad and in the correct position to each other to be brought. This can be done without much effort because the packing blocks are not stacked on the base need to be and the pad fiddling with the packing blocks relieved only by turning are brought into the correct relative position to each other.

The packing blocks are preferably arranged side by side and one behind the other assembled to form a fixed bed element. This will only make up one level or layer side by side and successive packing. The packing blocks are preferably in one of these Number arranged side by side and one behind the other that so that a fixed bed element is created that cross-section corresponds to the fixed bed body. This can be done in this way form especially easy because only a corresponding number of fixed bed elements lying side by side in the basin or Container is to be arranged. The relative position of individual Packing blocks therefore no longer need to be changed in the container to become. There is also no longer any stacking of packing blocks necessary. You only need the individual fixed bed elements to be attached side by side in the container to the appropriate Get fixed bed body.

It is also provided that the individual packing blocks of the respective fixed bed element before insertion into the container with fasteners for anchoring the solid blocks to provide the fixed bed element in the container. In this way can be a significant part of the assembly work outside the container respectively. The fasteners are preferred already assigned to the fixed bed element if the individual Packing blocks to form the same on the documents in the intended relative position has been brought to each other are.

According to a preferred development of the method, the on the preferably horizontally aligned base for Fixed bed element composite packing blocks in total reoriented, preferably erected and thereby the whole Fixed bed element brought into a vertical position, the it also takes up in the container. That thus swung into a vertical Fixed bed element is then placed in the container used and anchored there, preferably with the support under the fixed bed body to be manufactured. By straightening up of the prefabricated fixed bed element, it is not necessary to stack the packing blocks, neither outside the Container on the pad still inside the container. The simplifies the assembly of the fixed bed body considerably. In particular manual work is reduced to a minimum, namely only extend to a shift and twisting the packing blocks on the base.

Further subclaims relate to advantageous further developments of the procedure.

Fig. 1

einen teilweisen Querschnitt durch einen Behälter mit einem darin angeordneten Festbettkörper,

Fig. 2

eine perspektivische Ansicht eines Füllkörperblocks,

Fig. 3

eine schematische perspektivische Darstellung eines Festbettkörpers in einem dreidimensionalen Koordinatensystem, und

Fig. 4

eine Draufsicht auf eine Unterlage zum Zusammensetzen mehrerer Füllkörperblöcke zu einem Festbettelement.

The method according to the invention is explained in more detail below with reference to the drawing. In this show:

Fig. 1

a partial cross section through a container with a fixed bed body arranged therein,

Fig. 2

a perspective view of a packing block,

Fig. 3

is a schematic perspective view of a fixed bed body in a three-dimensional coordinate system, and

Fig. 4

a plan view of a base for assembling several packing blocks into a fixed bed element.

For the biological treatment of fluids, especially for biological Wastewater treatment, fixed bed bodies serve 10. The Fixed bed body 10 form a vegetation area for a so-called biological lawn with the sewage to be cleaned or another liquid or gas in one Fixed bed body 10 (or more) receiving container or the like is brought into contact.

1 shows part of a cut container 11, in which the fixed bed body 10 is arranged. The fixed bed body 10 is only partially shown in FIG. 1. Alternatively it is possible to have several fixed-bed bodies in one container 11 to arrange. In the embodiment of Fig. 1 is on a horizontal base plate 12 of the container a support 13, which is designed in the manner of a three-dimensional framework is. The support 13 has upright foot struts 14, whose upper, free ends by longitudinal struts 15 and cross struts 16 are connected. The longitudinal struts 15 and the cross struts 16 form a horizontally directed grid on which the fixed bed body 10 rests. Below the fixed bed body 10 are in the area of the support 13 ventilation devices 17th arranged, which will not be discussed in more detail here.

The cuboid fixed bed body 10 is formed from a Large number of identical packing blocks 18. By a packet-like stacking of several of these same packing blocks 18 creates the fixed bed body 10. FIG. 3 illustrates schematically (with a deviating from FIG. 1 Number of packing blocks 18), like packing blocks 18 are arranged to form the fixed bed body 10. The better For the sake of clarity, this should be done in conjunction with FIG. 3 explained with a three-dimensional coordinate system become. Accordingly, based on the installed condition of the fixed bed body 10 in the container 11 a plurality of packing blocks 18 in Direction of the X axis side by side and in the direction of the Z axis stacked one behind the other to form a horizontal Stacking level. In addition, there are several packing blocks 18 stacked on top of each other in the direction of the Y axis. The packing blocks 18 are therefore in several horizontal stacking levels on top of each other. In each stack level is the number of Packing blocks 18 are the same. In the vertical direction, i.e. in Cross-sectional direction through the fixed bed body 10, form packing blocks 18, which is in a plane related to the X axis in Direction of the Z axis one behind the other and in the direction of the Y axis are stacked one above the other, a fixed bed element 19. Ein such fixed bed element 19 thus provides a vertical layer from one another only in the direction of the Y axis and in the direction the Z-axis packing blocks 18 arranged one behind the other Several of these in a vertical plane in the container 11th arranged fixed bed elements 19 are in the direction of the X axis arranged side by side. In the exemplary embodiment in FIG. 3 each of the same number of packing blocks 18 having fixed bed element 19 formed by five in the direction the Z-axis stacked packing blocks 18 and six stacked one above the other in the direction of the Y axis Packing blocks 18. Five such fixed bed elements 19 are in Direction of the X axis arranged directly next to each other, the Fixed bed elements 19 of different levels or layers the X-axis lie directly against each other like that Packing blocks 18 of each fixed bed element 19.

2 shows the structure of a packing block 18 for formation of the fixed bed body 10 or each fixed bed element 19. All packing blocks 18 of the fixed bed body 10 and the fixed bed elements 19 have the same training and the same dimensions. Each cubic packing block 18 is made up of a large number arranged side by side and one behind the other Pipe sections over a net-like outer surface and open end faces 21 have. For the pipe sections it is therefore a question of network tubes 20. In FIG. 2 is only the network structure for reasons of easy representation a network tube 20 indicated. It actually exists but the entire packing block 18 from network tubes 20. This are made of thermoplastic. The net tubes 20 are directed vertically, ie with a vertical longitudinal central axis arranged side by side in rows and rows, such that adjacent network tubes 20 with their outer lateral surfaces in vertical contact with each other stand, namely to lie against each other. The network tubes 20 each Packing blocks 18 are in a manner known per se connected, in the region of their open end faces 21 and / or at their contact lines. This connection can be made through Welding or the like take place. With the built-in fixed bed body 10, the packing blocks 18 are all oriented in such a way that their network tubes 20 with respect to their longitudinal direction run vertically. Furthermore, the packing blocks 18 stacked one above the other in the installed fixed bed body 10, that the network tubes 20 adjacent (upper and lower) Packing blocks 18 lie directly one above the other and thus the end faces 21 of adjacent network tubes 20 abut each other and cursed with each other. It arises over the whole Height of the fixed bed body 10 continuous net tube columns, the sections from the network tubes 20 or one above the other stacked packing blocks 18 are formed.

In the production of the fixed bed body 10, the procedure is as follows that on a flat surface 22 (Fig. 4) outside the container 11 the packing blocks 18 to a fixed bed element 19 are composed. The pad 22 can by be level. For uneven or unpaved A separate, stable base 22 can also be used as the base be used. The base 22 is preferably horizontal aligned.

The assembly of the packing blocks 18 to form a Prefabricated fixed bed element 19 takes place on the base 22 in one of the installed position of the fixed bed body 10 in the container 11 different arrangement. The packing blocks 18 are namely all lying, namely with horizontal Network tubes 20, assembled. The longitudinal central axes of the Network tubes 20 thus run parallel to the horizontal base 22. While in the fixed bed body built into the container 11 10 of each fixed bed element 19 in the direction of the Y axis and the Z axis adjacent and consecutive packing blocks 18 composed (Fig. 3), run in the compilation of the respective fixed bed element 19 on the base 22 the Y axis and the Z axis in the plane of the base 22, that is, the Y axis is pivoted from a vertical direction with respect to the built-in fixed bed body 10 in the container 11 in a horizontal direction when assembling the fixed bed element 19 on the base 22 (Fig. 4).

After assembling an appropriate number of packing blocks 18 in the direction of the Y axis and the Z axis of the pad 22, the packing blocks 18 have a relative arrangement to each other, which corresponds to the fixed bed element 19. So there are so many packing blocks on the base 22 18 in the direction of the Y axis one behind the other and in Direction of the Z axis arranged side by side, so that a Fixed bed element 19 is formed, the vertical cross section of the Fixed bed body 10 in the container 11 of the plane of the Y and Z axes corresponds. The packing blocks 18 are mutually such aligned that the longitudinal central axes of all network tubes 20th run horizontally and the end faces 21 of their network tubes 20 are in line with each other and thus in the direction of Y-axis through the entire fixed bed element 19 continuous tubular columns arise.

After the packing blocks 18 have been assembled, they become connected to each other, with such connecting means, after the installation of the fixed bed elements 19 in the container 11 serve to hold the individual packing blocks 18 together and to connect with the support 13 in the container 11 so that the Packing blocks 18 in the water to be cleaned in the container 11 do not float. Lanyards can be used here as they are from German utility model 298 01 304 are known. These connecting means are essentially rod-shaped and either extend continuously in the direction the Y axis through the successive network tubes 20 of the entire fixed bed element 19 or they are in so-called Gusset between four adjacent network tubes 20 des respective packing blocks 18. The rods are on the End face 21 of the packing blocks later lying in the top of the container 11 18 secured by screws and washers. From the end faces 21 of the container 11, packing blocks lying at the bottom 18 initially protrude the rods without a connection with the packing blocks 18 freely out.

After the packing blocks 18 to a respective fixed bed element 19 assembled and fasteners by the Fixed bed elements 19 are inserted, the packing blocks 18 of the fixed bed element 19 with one in the figures Connected transport aids, not shown. This transportation aid has at least two elongated rods, which are dimensioned such that they are later in the container 11th above page 23 through selected network tubes 22 of the Packing blocks 18 can be pushed through and thereby on the opposite, lying in the container 11 below Page 24 from the packing blocks 18 or the fixed bed elements 19 protrude. These protruding ends of the rods of the Transport aids are with removable support elements, in simplest case, split pins, on which the packing blocks are located 18 of the fixed bed element 19 on the side 24, when the fixed bed element 19 is inserted into the container becomes

After inserting the transport aid into the fixed bed element 19 run the bars of the transport aid like the rods for later connection of the packing blocks 18 with each other and with the support 13 horizontally.

After the transport aid is inserted into the fixed bed element 19 and associated with it, becomes the transportation aid with the fixed bed element 19 raised, for example by a crane, and thereby the fixed bed element 19 from the horizontal plane on the base 19 erected in a vertical plane. The pre-assembled on the pad 21 Fixed bed element 19 is thus inserted into the container before insertion 11 reoriented. The mesh tubes 20 of the packing blocks change 18 their when assembled on the base 22 horizontal direction of extension in a vertical Extension direction. The bottom 24 side of the fixed bed element 19 is supported with the end faces 21 of those network tubes, through which the rods of the transportation aid beforehand have been pushed through on the releasable pads on the lower ends of the bars of the transport aid.

After erecting the fixed bed element 19, this is also their vertical alignment with the vertical Y axis and horizontal Z-axis inserted into the container 11, namely then if already one or more in the same way before assembled fixed bed elements 19 are in the container 11 in Direction of the X axis next to the one last inserted in the container 11 Fixed bed element 19. In the exemplary embodiment in FIG. 3 are five fixed bed elements 19 in succession and side by side inserted lying in the container 11. In the embodiment 1 with a larger number of fixed bed elements 19th a correspondingly large number of on the base 22nd pre-assembled fixed bed elements 19 in succession in the container 11 used. This is done in such a way that the large, vertical wall surfaces 25 which are used in the assembly of the fixed bed element 19 run horizontally on the base 22, adjacent Fixed bed elements 19 lie against one another.

After the respective fixed bed element 19 in the intended position has been brought into the container 11, the rods for holding the packed blocks 18 of the fixed bed element together 19 and for fastening the fixed bed element 19 on the support 13, with the same, namely the longitudinal struts 15 and / or the Cross struts 16, attached and then the screws and Washers of the rods on the top side 23 of the Fixed bed element 19 screwed, causing tension the stacked packing blocks 18 with each other and with the longitudinal struts 15 and / or cross struts 16 of the support 13 comes about. Then the lower side 24 the fixed bed element 19 detached from the transport aid, so that the bars of the transport aid upwards out of the concerned fixed bed element 19 can be pulled out. The transport aid can then be used to take the next one Fixed bed element 19 serve. This is also called prefabricated Unit with the transport aid in the container 11 used in the direction of the X axis next to the external, free wall surface 25 of the previously in the container 11 inserted fixed bed element 19.

For fast, fatigue-free and secure attachment of the Poles on the support 13, an assembly carriage can be used become. The assembly trolley is under the fixed bed elements 19th arranged, in the space between the support 13th under the fixed bed elements 19 and the bottom plate 12 of the Container. The assembly cart has a base frame with Fixed castors and a lying surface mounted on the base frame. If necessary, the bed surface can fold out the head and foot sections exhibit. It is directed essentially horizontally. The assembly cart is dimensioned so that it is between neighboring Upright foot struts 14 of the support 13 can be moved through.

A mechanic can lie down on the assembly trolley Move support 13 along, preferably by itself continues on the vertical foot struts 14 of the support 13 or push. On the lying surface of the respective assembly trolley is preferably a fitter. But there can also be several Fitters lie on the bed at the same time. The mechanic or the fitters can simply get into the assembly car each position in which the rods of the Fixed bed elements 19 are to be connected to the support 13.

The assembly process is complete when all to form the Fixed bed body 10 required fixed bed elements 19 of the series after on the pad 22 in the manner described above pre-assembled horizontally and erected vertically and in the container 11 have been used.

Reference symbol list :

10th

Fixed bed body

11

container

12th

Base plate

13

In stock

14

Foot brace

15

Longitudinal strut

16

Cross strut

17th

Ventilation device

18th

Packing block

19th

Fixed bed element

20th

Net tube

21

Face

22

document

23

page

24th

page

25th

Wall surface

Claims (12)

Method for producing a fixed bed body (10), preferably to be arranged in a container (11) or the like, for the biological treatment of fluids, the fixed bed body (10) being composed of a multiplicity of preferably cuboid packing blocks (18), characterized in that a plurality of packing blocks ( 18) assembled outside the container (11) and used as a unit (fixed bed element 19) in the container (11). A method according to claim 1, characterized in that the unit (fixed bed element 19) consisting of a plurality of assembled packing blocks (18) with a transport aid is inserted into the container (11) or the like, the transport aid preferably holding the unit in a form-fitting manner, in particular holding it together. Method according to one of the preceding claims, characterized in that the packing blocks (18) are assembled on a flat, preferably horizontal base (22) outside the container (11) or the like. Method according to one of the preceding claims, characterized in that on the flat base (22) a layer of filler blocks (18) lying only next to and behind one another is produced to form a unit in the form of a fixed bed element (19). Method according to one of the preceding claims, characterized in that the number of the packing blocks (18) lying one behind the other and next to one another, which are assembled on the flat base (22) to form a fixed bed element (19), is such that the dimensions of all packing blocks ( 18) of the fixed bed element (19) corresponds to the height and the depth or width of the fixed bed body (10) to be produced. Method according to one of the preceding claims, characterized in that several prefabricated fixed bed elements (19) are arranged side by side to form the fixed bed body (10) in the container (11). Method according to one of the preceding claims, characterized in that the individual packing blocks (18) of the respective fixed bed element (19) before being inserted into the container (11) or the like with fastening means for anchoring the fixed bed element (19) in the container (11) or the like , in particular with a support (13) in the container. Method according to one of the preceding claims, characterized in that the fixed bed element (19) composed of individual packing blocks (18) on flat supports (22) is erected before insertion into the container (11) or during insertion into the container (11) , preferably from the transport aid. Method according to one of the preceding claims, characterized in that when the fixed bed element (19) is assembled on the preferably horizontal base (22), the packing blocks (18) are assembled with horizontally running pipe sections (network pipes 20) and for insertion into the container (11). or the like are reoriented such that the longitudinal central axes of the pipe sections (network pipes 20) of the packing blocks (18) run vertically. Method according to one of the preceding claims, characterized in that after the respective fixed bed element (19) has been inserted into the container (11) or the like, the fixed bed element (19) with its preassembled fastening means is anchored in the container (11) or the like and then the transport aid from Fixed bed element (19) is released. Method according to one of the preceding claims, characterized in that the packing blocks (18) are assembled to form the fixed bed element (19) in such a way that the pipe sections (network tubes 20) of packing blocks (18) lying one above the other are aligned. Method according to one of the preceding claims, characterized in that the transport aid preferably has a plurality of rods which are inserted through certain tube sections (network tubes 20) in the longitudinal direction of all packing blocks (18) of the fixed bed element (19) lying one behind the other and preferably with releasable support means for the fixed bed element ( 19) can be provided.

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